Guilherme Siqueira ‘monitored by Manchester United’

The 25-year-old has impressed during his first season in Spain’s top flight and has been linked with Atletico Madrid and Valencia in recent weeks.

Guilherme Siqueira (right) has been watched by Manchester United (AFP/Getty Images)

United have been alerted to the Brazilian’s performances and Sir Alex Ferguson’s brother, Martin, was spotted in the stands for Granada’s home game against Sevilla on Monday.

He may not have been too impressed with what he saw as Siqueira’s team slumped to a 3-0 defeat.

Should United make a move for Siqueira it would represent a remarkable turnaround in his career, as he struggled to establish himself during his time with Udinese and was happy to join Granada, initially on loan, last season even though they were then in the second tier.

The Red Devils are known to be considering bringing in new full-backs in the summer, as Rafael and Fabio da Silva have not developed as quickly as had been hoped.

United have also been credited with an interest in Lille right-back Mathieu Debuchy.